Personal cooler



FIG. 1 is a top, front and left side perspective view of a personal cooler according to my design;

FIG. 2 is a top, rear and left side view thereof; and,

FIG. 3 is a top, rear and right side view thereof, the bottom of the personal cooler forming no part of the present design. 

The ornamental design for a personal cooler, as shown and described. 